生殖：练习题

Which of the following is a key characteristic of asexual reproduction?

In sexual reproduction, the offspring show significant genetic variety. Which of the following is the primary cause of this variation according to the process of fusion of gametes?

In therapeutic cloning, an embryo is produced with the same genes as the patient. Why is this technique considered a major advantage for medical treatments?

In multicellular organisms, body cells divide to produce additional cells for growth or to replace damaged cells. What is the name of this type of cell division?

During the process of meiosis in reproductive organs, a cell divides to form gametes. Which of the following correctly describes the result of this process?

What is the main difference between sexual reproduction and asexual reproduction regarding the number of parents involved?

Explain why sexual reproduction leads to genetic variety in the offspring while asexual reproduction does not.

Organisms can reproduce through sexual or asexual means.
(a) Describe two main differences between sexual and asexual reproduction in terms of the number of parents involved and the genetic variety of the offspring.
(b) Why are offspring produced by asexual reproduction referred to as 'clones'?

Malaria parasites reproduce inside the human body and also inside the mosquito vector.
(a) Name the type of reproduction that occurs when male and female sex cells fuse to form a zygote.
(b) Explain how sexual reproduction produces genetic variation in the offspring.
(c) Malaria parasites reproduce asexually inside human liver and red blood cells. Give two advantages of asexual reproduction for a pathogen inside a host organism.